Solving Integral of 1/(sinx)^4

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SUMMARY

The integral of 1/(sinx)^4 can be effectively solved using the Weierstrass substitution method, specifically by letting t = tan(x/2). This substitution transforms sin(x) into 2t/(1+t^2), allowing for a change of variables that simplifies the integration process. Additionally, considering the cosecant function, csc(x), and its relationship with cotangent, d(cot(x)), provides further insights into the integral's structure. The discussion emphasizes the importance of strategic substitutions to tackle complex integrals.

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  • Understanding of integral calculus
  • Familiarity with Weierstrass substitution
  • Knowledge of trigonometric identities, specifically sin(x) and csc(x)
  • Experience with integration techniques, including integration by parts
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  • Learn about the properties and applications of cosecant and cotangent functions
  • Practice solving integrals involving trigonometric functions
  • Explore advanced integration techniques, including reduction formulas
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Homework Statement



integral of 1/(sinx)^4

Homework Equations



i dunno

The Attempt at a Solution



ive tried substitution but that just results in a more complicated integral, integration by parts does the same thing without actually reducing the integral. I though i could use integration by parts to recreate the original integral but, i can't get that to work either. any help?
 
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This looks like something where you would do Wierstrass substitution.
http://math.berkeley.edu/~reshetik/LN/1B-lec6.pdf

t=tan(x/2); sin(x) = 2t/(1+t2); then figure out what dx so you can replace it with dt. After you've integrated, remember that t=tan(x/2).
 
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hints:
1. think about csc(x)

not enough?
2. think about 1+csc^2(x)

still not enouh?
3. think about d(cot(x))
 

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